192815 research outputs found
Sort by
Sicilian Popular Theatre and the London Stage: Storytellers, Puppeteers, and Actors
No abstract available
Narrating the Origins of the Quest: The Historical Jesus in Early Modern Cultural Complexity
No abstract available
Disarming International Law from Scotland: Internationalist Pasts and Future Possibilities on a Global Front Line
Species-specific trends in migratory passage time through Nigeria based on long-term ringing data
As environmental conditions change, the ability of species to adjust their phenology is important for fitness. Advantageous adjustments are often specific to location, species, and annual cycle phase, and are particularly complex in migratory birds that must account for environmental change at vast spatio-temporal scales. Despite the heightened vulnerability of migrants, data on phenological shifts are largely unavailable for non-breeding areas. To reduce this gap, we used ringing data from 2001–2024 from Nigeria to model passage of 10 long-distance migrant species, accounting for a behavioural gradient between locally resident ‘stayer' species and ‘movers' which only occur on passage. By assessing temporal trends and environmental associations, we strove to discern effects of ‘pull factors' from goal areas and locally acting ‘push factors'. Passage varied substantially, whereby typically stayers showed early-starting and long passage, whereas movers showed late-starting, fast passage, highlighting the importance of accounting for different movement behaviour. Peak passage across species changed only slightly over time, but a few species markedly delayed post-breeding migration and advanced pre-breeding migration, consistent with possible evolutionary adjustment to climate change. Our findings only partly confirm reported wide-spread delays of post-breeding migration and advances of pre-breeding migration. Environmental associations in Nigeria were species-specific. For some species, post-breeding passage was early in years with late vegetation senescence in Europe, while pre-breeding migration occurred early in years with early green-up in Nigeria, and particularly in cool years. These associations suggest that favourable local conditions enhance earlier departure in both migration seasons, possibly due to pull factors favouring timely post-breeding arrival in Africa and pre-breeding arrival in Europe. The sensitivity of pre-breeding migration to ambient temperature requires closer investigation of migratory birds' ability to cope with warming non-breeding grounds, and warns that projected further warming could exacerbate difficulties to keep up with earlier springs on the breeding grounds
Are lacunar infarcts associated with a “susceptibility vessel sign”?: a 7-Tesla MR imaging study
Introduction:
The pathophysiological basis for lacunar stroke is uncertain. The susceptibility vessel sign (SVS) on magnetic resonance imaging (MRI) is associated with thrombotic large vessel occlusion and has been reported in association with lacunar infarcts using T2* imaging. We investigated the presence of a relevant SVS in acute lacunar stroke with susceptibility-weighted imaging (SWI) and time-of-flight MR angiography (TOF-MRA) at 7 Tesla (T).
Patients and methods:
We performed a single-centre prospective observational study in patients with small subcortical infarct confirmed on 1.5 or 3 T MRI. Additional 7 T MRI was acquired and raters independently reviewed 7 T SWI and TOF-MRA sequences blinded to clinical data. Presence of an SVS and any associated occluded vessels were recorded. A SVS was considered present if reported by two or more raters in the relevant hemisphere with agreement confirmed at consensus review.
Results:
Twenty people (10 male, 10 female), with median age 67.5 [interquartile range (IQR) 64–81] years and median National Institutes of Health Stroke Scale 3 (IQR 2–4.75), underwent 7 T MRI. Possible SVS was visualized in 7 of 20 scans (35%) on SWI, with 4 considered highly likely (20%). TOF-MRA review showed an occluded small vessel proximal to the infarct in 1 of 20 patients (5%). This was not associated with a positive SVS on SWI.
Conclusion;
A possible SVS was observed in up to 7 of 20 (35%) people with recent small subcortical infarcts, but anatomically related vessel occlusion was not confirmed using TOF-MRA. Diagnosis of small vessel SVS appears subjective and confirmation with 3-dimensional vascular imaging may increase reliability
Empowering Left-Behind Youth Through Faith and Decent Work [Zimbabwe Policy Brief (RASTAY Project)]
Transnational parental migration is leaving many Zimbabwean young people without daily care, guidance and protection. While remittances can improve household income, many left‑behind youth experience loneliness, anxiety, school disruption, and heightened exposure to exploitation, substance use and unsafe work. Faith‑based organisations (FBOs) are often the first place young people turn for food, school fees, counselling and a sense of belonging, but these systems are stretched and poorly linked to government services. At the same time, documentation barriers and restrictive rules can keep some young people and refugees out of formal work and training. In this brief, “left‑behind youth” refers to young people living in Harare whose parent(s) have migrated internationally and are therefore not providing daily, in‑person care and supervision. **Problem (one line):** Left‑behind youth are vulnerable now because family separation is rising and protection systems are fragmented. **Three headline actions (6–12 months):** (1) establish Faith–Youth Help Desks; (2) run documentation and legal‑aid clinics; (3) launch skills-to-jobs pathways through FBO professional networks. **Expected benefit:** improved wellbeing, safer pathways into decent work, and reduced exposure to exploitation and substance abuse